Spinning-frame with conducting-belt for the roving.



F. CASABLANCAS. SPINNING FRAME WITH CONDUCTING BE LT FOR THE ROVING.

APPLICATION FILED JULY 17; I917. 11. @5%,391 u Pgtented Jan. 22, 1918.

3 SHEETS-SHEET I.

F. CASABLANCAS.

SPINNING FRAME WITH CONDUCTING BELT FOR THE ROVING. APPLICATION FILED JULY 17, W11.

1,254,391 Patented Jan-22,1918.

3 SHEETS-SHEET 2.

F. CASABLANCAS. SPINNING FRAME WITH CONDUCTING BELT FOR THE ROVING.

APPLICATION FILED JULY 17,1917. LMfiQL Patented Jan. 22,1918

3 SHEETS-SHEET 3.

FERNANDO CASABLANCAS, OF SAIBADELL, SPAIN.

SPINNING-FRAME WITH CONDUCTINGZBELT FOR THE ROVING.

Specification of Letters Patent.

Patented Jan. 22?, 191$.

Application filed m 17, 1917. Serial No. 181,150.

To all tuhom it may concern.

Be it known that I, FERNANDO CAsA- BLANCAS, subject of the King of Spain, re-

siding at Sabadell, Barcelona, Spain, have invented certain new and useful Improvements in Spinning-Frames with Conducting-Belts for the Roving, of which the following is a specification. I

My invention relates to the spinning frames and similar machines of the type described in my former Patent Np. 1,213,744. In this patent there is described a spinning frame provided with a mechanism for conveying the fibers to the drawing cylinders retaining them at the same time In order to prevent the fibers drawn by the drawing cylinders from being able to drag along wlth them the other fibers of the roving. This mechanism consists essentially oftwo endless belts suitably guided which grip the roving between them and convey it to the drawing cylinders, and it presents as an essential characteristic that the belts are not tight but are loose and are of a material that exhibits a certain rigidity, with-the object of causing the belts to take up a convex shape corresponding to the stiffness of the material of which they are made, and this convexity causes the parts of the two belts that are in contact to ress against one another with a uniform and at the same time a resilient force. In particular the belts are arranged in such a way that in their front curve or loop' nearest to the drawing cylinders they do not exercise a hard pressure against one another but merely a soft and resilient pressure, various arrangements being described in my former patent which the belts may adopt for this purpose.

The apparatus of my former patent, based on the use of two loose belts, although it produces work of excellent quality, presents the disadvantage that the lower belt is rather inaccessible, and therefore in the event of this belt bein spoiled or broken from any cause, it is a most impossible to v repair or replace it without mterruptl ng the lower belt of the machine of my former patent by a fixed plate over which the upper belt slldes, the roving passing between this plate and the belt. In this way the motion of the belt in sliding over the plate draws the roving along with it, compelling it to advance toward the drawing cylinders, with the same speed of the belt and at the same tlme the pressure that the belt exercises on the plate and consequently on the roving, produces the necessary retention of the fibers in order to prevent the fibers seized by the drawing cylinders, when slippin between the other fibers of the rovmg, from drawing along with them in their motion the fibers that have not yet been seized by the drawing cylinders.

In this machine the fixed plate over which A the belt slides cannot get out of order and the upper belt, same as the cylinders that guide it, can very easily be withdrawn so that in the event of this belt being damaged or broken it can easily be repaired or replaced without interrupting the working'of the spinnin frame.

In descriiing in detail my invention reference will be had to the adjoining drawings, wherein like symbols refer to like or corresponding parts throughout the several views and in which:

Figure 1 is a cross section of a drawing mechanism of a spinning frame constructed according to Fig. 1 of my Patent No. 1,213,744 and embodying my invention; Fig. 2 is a lan view of said mechanism; Fig. 3 a detail of the method of supporting the guide'cylinder of the belt; Fig. 4 a similar section to-Fig. 1 of a mechanism in which the belt has an external guide as in the Figs. 3 and 4 of my former patent; Fig. 5 is a plan view of the same; Fig; 6 is a detail of the support of the cylinder of the belt and.

the left hand part the lower-cylinders are Will) Will are

shown, with the plate. the upper cylinders being supposed to be cut away.

The mechanism shown in the drawings comprised, as in the main patent, a pair of drawing cylinders 3, 4, a pair of intermediate cylinders 5, 6, and a pair of feeding cylinders 20, 21. Similarly the standards 29 that carry the whole mechanism, the support 22 that carries the lowercylinders, and the arms 15 that carry the journal bearings of the upper cylinders, are arranged as indicated in my former patent and are of similar construction to those usually employed in spinning machines and other textlle machines.

This invention consists of replacing the lower belt of the pair of endless belts described-in my former patent for conveying the roving to the drawing cylinders, by a plate 24, fixed in position, which may for example be sustained by the same support 22, being fixed thereto by means of screws 23. The belt 7 is arranged in the same way as in said former patent, and may be guided at its forward part by an internal rod or cylinder 1 (Fig. 1), or else by an external rod or cylinder 9 (Fig. 4) so that it would be possible to show both rods 1 and 9 in the way that is moreover described in my former patent.

In all cases the belt 7 is suitably arranged loose, so that it may take up a certain convexity in proportion to the stifiness of the material of which it is formed, and when it' carries an internal guide rod 1, as in Fig. 1, this rod is arranged at a sufiicient distance from the plate 24 to prevent the belt from pressing directly on the said plate 24, in such a way that the pressure exerted by the belt on the plate may be due solely and exclusively to the convexity that the belt tends to take up. The roving 13 passes between the cylinders 5, 6, and subsequently between the belt 7 and the plate 24, being conveyed to the drawing cylinders by the motion of the belt 7. The cylinder 5 exerts an energetic pressure on the belt and on the roving, which constrains both of them to follow the motion of the cylinder 5, and produces a strong retention on the fibers of the roving,

longer subject to any pressure except the soft and resilient pressure produced by the belt on the plate, which is sufiicient to make the roving advance toward the drawing cylinders, and to prevent the fibers of the roving from being able to become entangled and to drag one another along to be drawn by the drawing cylinders, but does not in any way hinder the fibers seized by the said drawing cylinders from being able to slide between the other fibers of the roving in order to effect the drawing thereof.

In Figs. 3 and 6 two arrangements of the supports of the cylinders or rods 1, 9, are shown by way of example. In'Fig. 3 the support 25 is screwed to the plate, and

terminates in a fork into which the end of whenever it becomes necessary to withdraw the belt. The support 26, shown in Fig. 6, is likewise screwed to the plate 24, but forms at the upper part a ring that completely encircles the rod 9, for since this rod is outside the belt 7 it is not necessary to withdraw the rod in order to be able to withdraw the belt. This arrangement enables the distance between the plate 24 and the rods 1, 9, to be easily adjusted by screwing the supports 25, 26, more or less toward it. Nevertheless these rods 1, 9, might be carried by means of supports fixed to the supporting arm of the cylinder 3.

If by any circumstance, during the working of the spinning frame, one of the belts 7 In Figs. 4, 5 and 7 is shown an arrangement that may be adopted for guiding the belt 7, preventing it from being able to be displaced laterally. It consists of a double fork 27, the back prongs of which form hooks 30 which grip the journals 31 of the cylinder 20, and of which the front prongs 28 rest on the lower cylinder 6 and embrace laterally the belt 7 and the upper cylinder 5, preventing any lateral displacement there of. It is advisable that the prongs 28 of the fork should be of a greater height than that corresponding to the thickness of the belt 7 and that they should likewise embrace later-v ally the cylinder 5, since otherwise this cylinder 5 would easily be able to reach and rest on the prongs 28, 'thereby ceasing to exert pressure on the belt and on the cylinder 6, whereupon the drag of the belt would cease to be regular, and in consequence of this the thread obtained would be faulty.

The cylinders 20, .21 in combination with the cylinders 5, 6, and the belt 7 exert a preliminary pull on the roving, which diminishes the tension and facilitates the ultimate drawing of the roving by the drawing cylinders 3, 4. If it is'desired, there may be arranged between the cylinders 6 and 21 a plate such as 24 combined with a belt such as 7 for delivering the fibers to the cylinders 5, 6, and belt 7 and for producing in this way the preliminary pull. 1

I have shown and described preferred and weasel satisfactory constructions, but desire it to be understood that slight changes may be resorted to without departing from the spirit and. scope of my invention, provided such changes fall within the scope of the appended claims.

I claim:

1. In a spinning frame, the combination of a fixed plate over which bears the roving, an endless belt which slides over said plate and draws in its motion the roving toward the drawing cylinders, said belt being loose so that it takes up a certaln convexity on account of its rigidity, a pair of driving rollers that grip said belt and drive it and means to guide thefront curve or loop of said belt, arranged in such a manner that they do not exercise a direct pressure on the part of the belt that retains the roving, in

order that the pressure of the belt on the" roving be soft and resilient.

2. In a spinning frame, the combination of an endless belt to convey the roving to the drawing cylinders, said belt being loose in order to take the convexity resulting from its own rigidity, a fixed plate over which said endless belt slides, the roving passing between said belt and plate and being dragged along by the belt, a pair of driving rollers that grip said belt and roving and drive them. and a guiding rod for the front curve or loop of said belt, said rod being sufiiciently separated from the fixed plate in order not to exert any direct pressure on the part of the belt that grips the roving.

3. In a spinning frame, the combination of a fixed plate over which bears the roving where it is conveyed to the drawing cylinders, an endless belt that slides over said plate and drags along in its motion the roving, conveying it to the drawing cylinders, said belt being loose in order to take the convexity resulting from its own rigidity, a pair of driving rollers that grip said belt and said roving and drive them, a guiding rod for the front curve or loop of said belt, said rod being sulficiently separated from the fixed plate in order not to exert any direct pressure overthe part of the belt that grips the roving, and a double fork, the backprongs of which rests on the journals of the upper feeding cylinder, while the front prongs rest on the lower intermediate cylinder, and embrace the belt and the upper intermediate cylinder laterally, for the purpose of obviating any lateral displacement thereof.

In testimony whereof I afix my signature.

FERNANDO casaetauoas. 

